v0.1.5 (#40)

Reviewed-on: wrenn/wrenn#40

envd-rs/src/state.rs

@@ -0,0 +1,87 @@
+use std::sync::atomic::{AtomicBool, AtomicU32, Ordering};
+use std::sync::Arc;
+
+use crate::auth::token::SecureToken;
+use crate::conntracker::ConnTracker;
+use crate::execcontext::Defaults;
+use crate::port::subsystem::PortSubsystem;
+use crate::util::AtomicMax;
+
+pub struct AppState {
+    pub defaults: Defaults,
+    pub version: String,
+    pub commit: String,
+    pub is_fc: bool,
+    pub needs_restore: AtomicBool,
+    pub last_set_time: AtomicMax,
+    pub access_token: SecureToken,
+    pub conn_tracker: ConnTracker,
+    pub port_subsystem: Option<Arc<PortSubsystem>>,
+    pub cpu_used_pct: AtomicU32,
+    pub cpu_count: AtomicU32,
+}
+
+impl AppState {
+    pub fn new(
+        defaults: Defaults,
+        version: String,
+        commit: String,
+        is_fc: bool,
+        port_subsystem: Option<Arc<PortSubsystem>>,
+    ) -> Arc<Self> {
+        let state = Arc::new(Self {
+            defaults,
+            version,
+            commit,
+            is_fc,
+            needs_restore: AtomicBool::new(false),
+            last_set_time: AtomicMax::new(),
+            access_token: SecureToken::new(),
+            conn_tracker: ConnTracker::new(),
+            port_subsystem,
+            cpu_used_pct: AtomicU32::new(0),
+            cpu_count: AtomicU32::new(0),
+        });
+
+        let state_clone = Arc::clone(&state);
+        std::thread::spawn(move || {
+            cpu_sampler(state_clone);
+        });
+
+        state
+    }
+
+    pub fn cpu_used_pct(&self) -> f32 {
+        f32::from_bits(self.cpu_used_pct.load(Ordering::Relaxed))
+    }
+
+    pub fn cpu_count(&self) -> u32 {
+        self.cpu_count.load(Ordering::Relaxed)
+    }
+}
+
+fn cpu_sampler(state: Arc<AppState>) {
+    use sysinfo::System;
+
+    let mut sys = System::new();
+    sys.refresh_cpu_all();
+
+    loop {
+        std::thread::sleep(std::time::Duration::from_secs(1));
+        sys.refresh_cpu_all();
+
+        let pct = sys.global_cpu_usage();
+        let rounded = if pct > 0.0 {
+            (pct * 100.0).round() / 100.0
+        } else {
+            0.0
+        };
+
+        state
+            .cpu_used_pct
+            .store(rounded.to_bits(), Ordering::Relaxed);
+        state
+            .cpu_count
+            .store(sys.cpus().len() as u32, Ordering::Relaxed);
+    }
+}